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10 Factors That Define an Energy-Efficient Data Center - 7

Water cooling of servers provides long-term benefits. Chilled, circulated water or other liquid can provide 10 times the cooling that air conditioning offers.

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10 Factors That Define an Energy-Efficient Data Center - 8

Location is a major consideration for a green data center. The most efficient centers are located near abundant hydroelectric power-

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10 Factors That Define an Energy-Efficient Data Center - 9

Power converters are newer, adjustable units such as those made by Emerson, APC and Eaton, which are much more efficient than older, conventional models. These components take outside AC power and convert it to DC power with a minimum loss of power through excess heat.

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10 Factors That Define an Energy-Efficient Data Center - 10

An energy-efficient data center will have backup power generators (uninterrupted power supplies) that are tested at least monthly, will start immediately in an emergency, and will be able to carry the load for one to three days in the event of a prolonged outage. These generators should be powered by natural gas.